US Patent No: 6,712,877
Number of patents in Portfolio can not be more than 2000
Oxygen concentrator system
Stats
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Mar 30, 2004
Issued date -
Aug 27, 2002
filing date -
10/228,134
serial no -
In Force
status
Importance
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Abstract
An oxygen concentrator system includes at least one oxygen concentrator sub-system and a plenum subsystem. The at least one oxygen concentrator sub-system produces oxygen-enriched air which is outputted to both the oxygen concentrator system output and to a plenum chamber within the plenum subsystem. The plenum chamber is trickle charged with the oxygen-enriched air when the at least one oxygen concentrator sub-system produces an excess amount of oxygen-enriched air. Should the demand for oxygen-enriched air exceed the capability of the at least one oxygen concentrator sub-system, additional oxygen-enriched air is provided by the plenum chamber until such time that the capability of the at least one oxygen concentrator sub-system exceeds the demand of oxygen-enriched air. At that time, oxygen-enriched air is no longer provided by the plenum chamber but rather the plenum chamber is again trickle charged.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,146,447 Oxygen generation process and system using single adsorber and single blower | 16 | 1998 | |
| 6,156,101 Single bed pressure swing adsorption process and system | 8 | 1999 | |
| 6,183,538 Pressure swing adsorption gas flow control method and system | 4 | 1999 | |
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| 5,071,453 Oxygen concentrator with pressure booster and oxygen concentration monitoring | 72 | 1990 | |
| 5,858,063 Oxygen concentrator with beds' duty cycle control and self-test | 21 | 1997 | |
| 6,342,090 Gas generating system with multi-rate charging feature | 20 | 2000 | |
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| 4,428,372 Process and apparatus for providing breathing gas | 87 | 1981 | |
| 4,661,124 Molecular sieve type gas separation systems | 21 | 1982 | |
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| 5,746,806 Apparatus and method for controlling output of an oxygen concentrator | 53 | 1996 | |
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| 4,545,790 Oxygen concentrator | 34 | 1983 | |
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| 5,486,226 Separation of gaseous mixtures | 17 | 1993 | |
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| 5,917,135 Gas concentration sensor and control for oxygen concentrator utilizing gas concentration sensor | 51 | 1997 | |
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| 4,927,434 Gas component extraction | 47 | 1988 | |
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| 5,858,062 Oxygen concentrator | 50 | 1997 | |
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| 5,730,778 Fluid fractionator | 52 | 1996 | |
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| 5,505,765 Method and apparatus for separating nitrogen-enriched gas | 15 | 1995 | |
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| RE35099 Fluid fractionator | 46 | 1993 | |
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| 5,529,607 PSA process with dynamic purge control | 43 | 1995 | |
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| 6,200,365 Device and method for continuously fractionating a gas by adsorption and in-service testing device | 25 | 1999 | |
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| 4,948,391 Pressure swing adsorption process for gas separation | 25 | 1989 | |
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| 4,491,459 Portable oxygen enrichment and concentration system | 37 | 1983 | |
| 5,171,336 Purge air system | 9 | 1992 | |
| 5,340,381 Operating system for dual-sieve oxygen concentrators | 30 | 1993 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 30, 2015 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |